Bulk loading visitor data

G'day,

Can you load the visitor data for multiple visitors with an element? I created an element that has these codes:

<vdm:setalias key="user" value="foo"/>

<vdm:setscalar attribute="Gender" value="Male"/>

Visitor ID <ics:getssvar name="_OMKT_VIS_"/>

<commercecontext:logout/>

<vdm:setalias key="user" value="bar"/>

<vdm:setscalar attribute="Gender" value="Female"/>

Visitor ID <ics:getssvar name="_OMKT_VIS_"/><Br/>

<commercecontext:logout/>

In the database, only 1 visitor ID with the alias "bar" is saved. It has 2 values for the Gender attribute, the 2nd visitor ID output is empty in the browser. According to the docs at commercecontext:logout